the youngest son of a farmer holds a vigil on his father's grave, receives a magical horse and tries to beat the King's challenge: to find the princess in the fourth floor of the castle. References External links The Glass Mountain Further reading Vandenborre, Katia "La réécriture symboliste de 'La Montagne de verre' ou le destin du conte dans la littérature de la Jeune Pologne", ILCEA, 20 | 2014, 8 December 2014, retrieved 29 October 2020. Grimms' Fairy Tales Polish fairy tales ATU 500-559